115515564 has 12 divisors (see below), whose sum is σ = 269536344. Its totient is φ = 38505184.

The previous prime is 115515553. The next prime is 115515581. The reversal of 115515564 is 465515511.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4813137 + ... + 4813160.

It is an arithmetic number, because the mean of its divisors is an integer number (22461362).

Almost surely, 2^115515564 is an apocalyptic number.

It is an amenable number.

115515564 is an abundant number, since it is smaller than the sum of its proper divisors (154020780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115515564 is a wasteful number, since it uses less digits than its factorization.

115515564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626304 (or 9626302 counting only the distinct ones).

The product of its digits is 15000, while the sum is 33.

The square root of 115515564 is about 10747.8167085227. The cubic root of 115515564 is about 487.0200425479.

The spelling of 115515564 in words is "one hundred fifteen million, five hundred fifteen thousand, five hundred sixty-four".